CVE-2020-36385

HIGHNVD 7.87.8—

7.8

An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 17.4%
KEV: Not listed

Published

June 7, 2021

Last Modified

November 21, 2024

References (12)

cve@mitrehttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
cve@mitrehttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1
cve@mitrehttps://security.netapp.com/advisory/ntap-20210720-0004/
cve@mitrehttps://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2
cve@mitrehttps://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6
cve@mitrehttps://www.starwindsoftware.com/security/sw-20220802-0002/
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210720-0004/
af854a3a-2127-422b-91ae-364da2661108https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2
af854a3a-2127-422b-91ae-364da2661108https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6
af854a3a-2127-422b-91ae-364da2661108https://www.starwindsoftware.com/security/sw-20220802-0002/

Patch Availability(15)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	kernel-0:2.6.32-754.43.1.el6	2022-01-18	redhat
redhat	redhat-virtualization-host-0:4.3.20-20211202.1.el7_9	2021-12-08	redhat
redhat	kpatch-patch	2021-12-07	redhat
redhat	kernel-0:4.18.0-193.70.1.el8_2	2021-11-30	redhat
redhat	kernel-rt-0:4.18.0-193.70.1.rt13.120.el8_2	2021-11-30	redhat
redhat	kernel-0:3.10.0-327.102.1.el7	2021-11-23	redhat
redhat	kernel-0:3.10.0-957.86.1.el7	2021-11-23	redhat
redhat	kernel-rt-0:3.10.0-1160.49.1.rt56.1189.el7	2021-11-23	redhat
redhat	kernel-0:3.10.0-514.95.1.el7	2021-11-23	redhat
redhat	kernel-0:3.10.0-1160.49.1.el7	2021-11-23	redhat
redhat	kernel-0:3.10.0-693.95.1.el7	2021-11-16	redhat
redhat	kernel-0:4.18.0-147.57.1.el8_1	2021-11-16	redhat
redhat	kernel-rt-0:4.18.0-305.25.1.rt7.97.el8_4	2021-11-02	redhat
redhat	kernel-0:4.18.0-305.25.1.el8_4	2021-11-02	redhat
redhat	kernel-0:3.10.0-1062.59.1.el7	2021-10-26	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

All Vendor Advisories

(20)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-36385?

CVE-2020-36385 is a high vulnerability published on June 7, 2021. An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctxlist in some ucmamigrateid situations where ucmaclose is called, aka CID-f5449e74802c.

When was CVE-2020-36385 disclosed?

CVE-2020-36385 was first published in the National Vulnerability Database on June 7, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-36385 actively exploited?

CVE-2020-36385 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-36385?

CVE-2020-36385 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2020-36385?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-36385, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-36385

Explore →

Is Your Infrastructure Affected by CVE-2020-36385?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2020-36385

Published

Last Modified

References (12)

Patch Availability(15)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-36385?

Same vendor

Same CWE

CVE-2020-36385

📅 Published

🔄 Last Modified

🔗 References (12)

Patch Availability(15)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-36385?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same vendor + same CWE)